Jrris peters co



' (No Model.) 5 Sheets-Sheet 1.

' E. LIPPITT & R. HANSDOERFER.

CIRCULAR KNITTING MACHINE.

No. 429,856. Patented June 10, 1890.

(No Model.) 5 Shets-Sheet 2. E. LIPPITT & R. HANSDOERFER.

CIRCULAR KNITTING MACHINE.

Patented June 10, 1890.

(No Model.) 5 Sheets-Sheet 3.

E. LIPPITT' & R. HANSDOERPER.

GIRUULAR KNITTING MAGHINB.

No. 429,856. Patented June 10, 1890.

ONLINC X- ON LIN Y (No Model.) I 5 Sheets-Sheet 4.

E. LIPPITT 8v '3. HANSDOERFER.

- CIRCULAR KNITTING MAGEINB.

No. 429,856. Patented June 10,1890.

5 Sheets-Sheet 5.

(Nob/16ml.) E. LIPPITT 8v R. HANSDOERPER. GIBCULAR KNITTING MACHINE.

No. 429,856. Patented June 10, 1890.

UNITED STATES PATENT OFFICE.

ELIHU LIPPIT" AND REINHOLDIIANSDOERFER, OF ZANESVILLE, OHIO, AS-

SIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO HENRY .H. STURTE- VANT,JOHN MARTIN, ANNA LIPPITT, AND ANNA MERCER, ALL OF SAME PLACE.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 429,856, dated June 10,1890.

Application filed January 6, 1888. Serial No. 260101 6. (No niodel.)

To all whom it may concern: carried by the revolving ring around thecyl- Be it known that we, ELIHU LIPPITT and inder and adapted to be heldmomentarily in 30 REINHOLD HANSDOERFER, of Zanesville, in action by handfor the purpose of .restoring the county of Muskingum and State of Ohio,the needles raised by the first-mentioned cam have invented certainImprovements in Cirto their operative positions; third, anautocular-Knitting Machines, of which the followmatic cam which actsupon the needles and ing is a specification. which is in turn set by theneedles one at the 5 In knitting heels and toes in stockings in end ofeach course; fourth, a cam which acts ordinary cylinderknitting-machines it is the upon and is in turn adjusted by the needlescustom to first raise the needles on one side for the purpose ofdepressing the needles of the cylinder out of the path of theiractuwhich are lifted out of action one at the end ating-cams, so thatthey will retain their of each course. stitches and for the time beingremain inact- In connection with the cams for effecting ive. The machineis then given an oscillatthe adjustment of the needles one at a time I 5ing instead of a rotary motion, in order to knit we propose to usecertain automatic devices additional stitches upon those needles whichfor controlling their action and throwing were left down in theiroperative positions. them into and out of play when their duties At theend of each course thus knit on the have been fully performed. depressedneedles an additional needle is In the accompanying drawings, Figure 12o lifted out of action, and this lifting of the represents inperspective an ordinary cylinneedles one at a time at the alternate endsof der-machine with our invention applied the course is continued untilbut a few neethereto. Fig. 2 is a top plan view of the dles, usually butone-sixth of the entire numsame with details omitted. Fig. 3 is atransber, are left in action. When this point is verse vertical sectionof the same through the 25 reached, the oscillating action being stillconparts in the path of the broken line as m of tinned, the needles arecarried downward into Fig. 2, the cylinder being turned from thepoaction, one'at the end of each course, until sition shown in Fig. 2 toone in which the finally the number of needles in action is the parts insection stand in the same vertical same as at the beginning of theheeling operaplane. Fig. 4C is a section on the line y y of 30 tion.Fig. Fig. 5is a plan vieW of the automatic It is the aim of ourinvention to combine belt-shipping devices in connection with the 5 withthe parts of a knitting-machine, which cam-adjusting mechanism. Figs. 6,7, and 8 may be in all other respects of ordinary conshow detail viewsof various parts. Fig. 9 is struction, mechanical devices to, efiect thea development or plane projection of the in- 5 above-named adjustmentsof the needle ner surface of the rotary cam ring or cylinthat is to say,to throw one-half of the needer, showing the form and arrangement of thedles instantly out of or into action, and to several cams. Figs. 10 to15 show the various throw the remaining needles, first, one at a cams indifferent positions. Fig. 16 isalinear time out of action, andthereafter one at a projection of the curved slide for operating 40 timeinto action. To this end we provide in the flying cams and theirconnections.

connection with the machine four distinct In the drawings, A representsthe fixed base devices or sets of devices: first, a cam caror frame; B,the upright stationary needleried by a revolving ring around thecylinder cylinder; C, the vertically sliding latched and shaped to beheld momentarily in action needles mounted in grooves in the cylinder;45 by hand for the purpose of throwing the nee- D, the rotary ring orcylinder-jacket, encirdles on one side of the cylinder upward beclingthe needle-cylinder and carryins. on its yond their operating-cams, sothat they may inner face the needle-actuating cams; E, the 5 retaintheir stitches; second, a cam or finger driving-pulley, mounted on adriving-shaft connected with the cam-ring by bevel-gear, as usual, togive the same a continuous rotary motion, and F the hand-crank foroscillating the cam-riu g during the heeling and toeing operation.

In their construction and mode of operation the foregoing parts are,except as to certain details hereinafter specified, of the ordinarycharacter.

Our first improvement relates to the device for raising the needles onone side of the cylinder out of action at the will of the operator, andis illustrated in Figs. 1, 2, 9, and 10, in which G represents along camor finger seated in the inner face of the cam-ring in position to travelbeneath the heels of the needles. It stands normally in a horizontalposition, as shown in Fig. 9. In this position it is inactive; but it ismounted at one end on a short shaft or journal g, extended outward andprovided with a crank-arm g, which is in turn connected by a link g witha finger-lever g pivoted to the cam-ring and terminating in a cup-likeportion g", exposed at the top of the machine in such position that itmay be conveniently depressed and held down as the ring revolves. Thedepression of this lever g throws the cam G upward to the inclinedposition shown in Fig. 10, in which position it forces all the needlesunder which it may be carried by the rotation of ring D upward, above,and out of the reach of their operating-cams, so that they remaininactive until again depressed. Thus, it will be seen, it is onlynecessary for the attendant to hold down the lever g during ahalf-revolution of the ring in order to raise the needles on one side ofthe machine out of action, as shown in Fig. 1. A spring g is commonlyused to depress the cam when the lever is released; but this spring maybe omitted, as the cam will then be depressed by gravity and theresistance of the overriding needles.

The second improvement relates to the means for again depressing orrestoring to their operative positions the needles raised by cam G, andis plainly shown in Figs. 1, 2, 9, and 15, in which H represents avertically vibratile cam or finger mounted on the inside of the rotaryring near its upper edge and connected through its journal h with thelinger-lever 7:, the end of which is cupped and exposed at the top ofthe machine in position to admit of its being conveniently held down bythe hand while the ring is revolving to carry it past the needles to bedepressed. A spring 71?, connected to the cam and the sustaining-ring,holds the cam normally in its elevated position, (shown in Fig. 9,) sothat it travels above and out of contact with the heels of the needles.IVhen, however, the finger-lever is depressed, it depresses the cam II,as shown in Fig. 15, so that it acts on the shanks of the elevatedinactive needles and carries them down within reach of theiractuating-cams, so that they resume operation.

for automatically lifting the active needles out of action, one at theend of each course as the cam-ring is oscillated, as is clearly shown inFigs. 9, 11, and 12. In. these figures I represents our lifting-cam,which will be hereinafter designated as the automatic lifting-cam todistinguish it from the others. J J represent the pivoted gravitatingcams, one or the other of which acts to elevate the needles whenknitting, according to the direction in which the machine is rotated,and K K the stationary cams to depress the needles when knitting. Thesecams are the same as those in common use, except that the cams J J,usually made in one, are cut apart to admit the automatic cam betweenthem. The automatic cam I is mounted on the upper end of a central arm irising from and sustained by a horizontal journal 1', seated in therotary ring or jacket,coincident, or practically so, with the apex ofthe cam, so that the cam may be tipped to the right or left,in order tobring either end uppermost, as required. The lower edge of cam Idescends from its end to the middle; but the upper edge descends fromthe middle to the ends, where the cam is formed with two shoulders ornotches L" i one at each end. The arm i" and journal 2' are connectedrigidly with,and are practically a part of, the cam I. The adjacent endsof the cams J J are formed and located so that the end of the cam Iwill, as it is tipped to and fro, rest upon and form a continuation offirst one and then the other, as seen in Figs. 11 and 12. A spiralspring 2', connected at one end to the cam-sustaining arm i", isattached at the other end to the ring D in such position that it willpass the center as the cam moves to and fro, and thus act to hold thecam in either position in which it may be placed. The cam acts to liftthe needles outof action, as follows: Assume that the ring is carryingthe cam to the left in Fig. 11., and that the cam stands in its lefthandposition, as shown in Fig. 11, it will pass Without action beneath theheels of those needles already lifted out of action; but on reaching thefirst needle, which is down in operative position, its shoulder i willride under and against the heel of said needle, and the heel, offering aresistance to the advance of the cam, will cause the latter to tip orrock on its journal toward the right until it assumes the position seenin Fig. 12. During this movement the needle-heel riding on the shoulderof the cam is carried so far upward that it will pass above cam K andbecome inactive. As the cam thus acts to raise the one needle, itsforward end, which is for the moment the left end, rises to suchposition that it overrides the heels of the remaining needles, which,passing thereunder, continue in operative position. The mot-ion of themachine is continued until the cam I is carried to the leftpast all theneedles in operative position, when the motion is reversed and the camcar- Our third improvement relates to the cam i ricd to the right. Beingnow in the position IIO shown in Fig. 12, its shoulder i will encounterthe first active needle and force it upward out of action, and in sodoing assume, because of the resistance of the needles, the positionseen in Fig. 11, so that the heels of the remaining needles pass belowit. Thus it will be seen that the cam acts automatically at the two endsof the line alternately to lift the needles out of action one at a time.The essence of the invention in this regard lies in the employment of amovable lifting-cam, which is adjusted by the action of the needlesthereon, and it is manifest that it may be modified in form andarrangement within the range of mechanical skill and without departingfrom the limits of our invention.

The fourth part of our invention (illustrat ed in Figs. 2, 3, 4, 13, and14:) relates to the automatic depressing-cam L for restoring the needlesraised by cam I to their operative position-that is to say, to aposition in which the cams J J K K will engage their heels and causethem to perform the knitting operation. The depressing-cam L is tippedfrom side to side by the action of the needles, and operates in a mannersomewhat similar to that of the elevating-cam, except that it forces theneedles downward instead of upward, one at a time. The cam is located atsuch height that the heels of the needles which are out of action willpass freely thereover, while the heels of the needles which are inaction will pass freely thereunder, except as they are brought by thesupplemental inner cams,pres entlyto be described,within reach of thecam L. As shown particularly in Figs. 3, 9, and 13, the cam is attachedrigidly to the lower end of a crank-arm I, having its fulcrum at Z inthe ring or jacket D. This crank-arm is in effect a central pivot toadmit of the cam rocking to and fro. The upper edge of the cam risesfrom the two ends toward the middle, while the lower edge is curveddownward from the ends toward the middle and formed at the oppositeextremities with shoulders Z and Z In order to hold the cam to the rightor the left, as the case may be, until it is moved by the needles, wemount in the ring D, as shown in Fig. 4, a vertically-movable plate Zurged upward by a spring l and acting against the lower end of thecam-sustaining crank. On opposite sides of the cam L are placed two camsor switches M 1W1, commonly known as flying cams. They are pivoted attheir inner ends so that they may swing vertically at their outer ends,and their officeis, acting one at a time, to bring the needles which areelevated out of action downward within the reach of the cam L. Onopposite sides of the cam L, below the flying cams, are mounted two camsN and N, which are fixed against a vertical movement, but which areallowed a limited horizontal movement in order that one or the other maybe brought into contact with the cam L, according to the position of thelatter. The office of these cams is to ride beneath the heels of theneedles and prevent them from falling out of the desired position duringtheir adjustment. The cams N and N are attached to studs 92, extendingthrough horizontal slots in the ring D to a connecting-plate n on theoutside of the ring, this plate being notched to receive the lower endof the cam-sustaining crank Z, so that as the cam L moves to the rightand left a corresponding movement is imparted to the cams N N, wherebythey are caused to I close alternately against its end in order toafford an unbroken track for the passage of the needles over the top.The flying switchcams M M are urged upward to an active position bysprings an, acting against studs m onthe free ends of the cams; but theyare both drawn and held down (when the cam L is to remain inactive) byinclined arms m on a bar m arranged to slide horizontally in guides onthe ring or jacket D. A spring m tends to draw the bar back and releasethe cams, while a toggle m pivoted at m to the bar and at m to the ringD, as in Fig. 16, serves to hold thebar to the left.

The action of the parts in depressing the needles one at a time is asfollows: Assuming that the flying cams are elevated and the cam L thrownto the left in Fig. 13, and that the ring is moving with the cams to theleft, as indicated in Fig. 13, the entire group of cams will pass overthe heels of the operative needles and remain inert until they reach theheels of the needles which are elevated out of action. When theseneedles are reached, the flying cam M will override their heels and drawthem down, and the heel of the first needle engaging the shoulder Z ofthe cam L will cause the latter to swing to the right to the positionshown in Fig. 14:, the needle being carried down by and with the camuntil its heel isin the path of the actuating-cams. The cam L in thusmoving to the right causes the cam N to advance against it at one end,while at the opposite and upper end it meets the heel of the flying camM, as seen in Fig. let, so that those elevated needles which follow theone first depressed will ride over the cams L M and retain theirelevated inactive positions. After the cams have passed all the inactiveneedles the motion of ring D is reversed and the edges carried to theright, whereupon the heel of the inactive needle at the end of the line,passing with the others beneath the flying cam M, will encounter cam Lin the position shown in Fig. 14 and carry it to the left to theoriginal position shown in Fig. 13. By this action the first needle iscarried down into the path of the actuatingcams; but the remainingneedles are caused to pass over the top of cam L and remain out ofaction.

It is to'be observed that the parts herein designated as cams I and Lare not merely switches or latches, but that they are, in fact, cams inthe usual sense of the word with inclined edges, along which the heelsof the needles travel. In the operation of each of these cams the needlewhich changes the position of the cam passes the same on one side, whilethe following needles pass on the other side.

From the foregoing description it will be seen that the needles act toreverse the posi tion of the cam L, and that it acts automati cally tobring the needles into action one at a time at the right and left of theline alternately.

The parts above described constitue a complete and operativeorganization capable of producing stockings with heels and toes therein,provided the attendant throws the appropriate cams into and out ofaction at the proper time. In order, however, to render the machineautomatic and to relieve the attendant of the care and labor of watchingand adjusting the cams, we employ, in connection with the mechanismalready described, devices which control the automatic lifting-cam andthe automatic depressing-cam in such manner that the predeterminednumber of needles will be lifted one at a time out of action, thendepressed one at a time into action, and finally the machine stopped.This mechanism in its preferred form is shown in Figs. 1, 2, 3, and 5.In these figures, 0 represents a horizontally-movable arm or leverpivoted at 0, and provided on its distal end with a camplate 0, such asshown in Figs. (3 and 7. The upper edge of this cam is intended to acton a stud 0 on the toggle to lift the same, in order to throw thewing-cams M M and automatic deIn'essing-cam Ii into play. Its lower edgeis intended to act on arms i and i on the shaft of the automaticlifting-can1 I, as shown in Figs. 6 and 7, to rock the cam in suchmanner that it will not act to lift the needles while the automaticdepressing-cam is in action. A spring 0 holds the cam-arm O normallybackward outward of the path of the arms i i and the stud 0 A wheel P islocated on the frame or bed plate and formed with a peripheral edge,one-half of which is of greater radius than the remainder to act on astud 0 on the lever O, in order to throw the lever over until the cam onits end is in operative position. This wheel is provided on its loweredge with peripheral teeth 0 in number half as many as the needles to beraised and lowered. The wheel is turned step by step by an angular dogor pawl 9, pivoted on a lever 11' and actuated through a link 19 from anangular lever p, which is in turn pivoted to the lever 1.7 and actuatedby a stud p on the rotary ring or jacket. A spring 1) urges the pawlinto engagement, and a spring 1) urges the lcverp' to the right. The dogp engages the tooth of the wheel to prevent retrograde motion. As thering D turns in one direction to operate the needles the lever 1) anddog 1) yield under the pressure of the passing stud p and turn idly ontheir axes; but as the ring carries the stud in the opposite directionit acts on the lever 11 and forces it, together with the lever 11 anddog 1), backward to the left, so that the dog turns the wheel P forwardone tooth.

In commencing the heelin g and toeing operation the toggle m is firstdepressed or straightened by hand to render the automatic depressing-eamand the flying cams inactive. At this time the stud of the cam-lever Obears on the innermost portion of the edge of the wheel P and. the camremains out of action. The cam-carrying ring D being new oscillatedthrough the proper patlnthe automatic cam I acts to lift the needles oneat a time. At each backward motion of the ring D the wheel P is advancedone step. This continues until the proper number of needles have beenelevated, at which time the outer most portion of the wheel I will rideagainst the stud and force the cam-lever 0 forward into operativeposition. The ring D being properly turned, the cam lifts the toggle andreleases the flying cams M M, so that they rise to the operativeposition shown in Figs. 13 and l t. The oscillation of the cylinderbeing now continued, the flying cams bring the heels of the needlesdownward within the path of the automatic depressing-cam L, by whichthey are carried downward one at a time, as before explained. Duringthis action thearms of the automatic lifting-cam pass to and fro beneaththe cam 0, which tips the cam I in a suitable manner to prevent itsaction on the needles. This operation continues, the wheel P stilladvancing, until the wheel again releases the lever O. The lever inmoving backward operates a bar 0 which will be suitably connected withshipping devices for throwing the driving-belt out of action andstopping the machine. These shipping devices may be of any ordinary orapproved form. In Fig. 5 wehave represented a simple arrangement for thepurpose, in which 0 represents the ordinary reciprocating bar forshifting the driving-belt from the fast to the loose pulley of themachine. It is acted upon by a spring 0 which tends to shift the belt tothe loose pulley, and it is held in position to keep the belt on thefast pulley by a pivoted dog 0, connected to the bar 0*". The parts areset in operative position by hand. \Vhen the cam-lever O retreats, itcauses the rod 0 to disengage the dog 0 from the shipping device.

In order to facilitate the removal of the needle-cylinder and itsneedles from the machine when the needles are lifted out of action bythe cam G, we propose to pivot cam II and its operating-lever to a supiorting-plate g, hinged at g to the ring D and secured in position by aspring-latch 1 so that on releasing the latch the plate may be tippedbackward in order to throw the cam and lever backward from the cylinder,in order that the needle-shanks may pass freely upward when the cylinderis lifted from the machine in the usual manner. As the needles arecarried by the cam G to an extreme height, and as the needle -slots arecontinued upward in the IIO usual manner to permit the free removal ofthe needles, we find it advisable to provide means for preventing themfrom tipping outward at the upper ends when their heels are acted uponby the depressing-cam II. WVe therefore attach to the plate g a secondand overlying plate g which bears against the needle-cylinder above thecam G and against the heels of the elevated needles, in order to holdthe needles to their places in the grooves. Owing to the fact that itssupport g is hinged, the plate 9 may be turned backward therewith awayfrom the needle-cylinder to a position outside of the needle-heels, sothat when the cylinder or either of its needles is lifted verticallyfrom the machine, as usual, the heels of the needles may pass upwardwithout interference on thepart of the plate 9 It is to be observedas apeculiarity of our machine that our rocking cams I and L are arranged tooperate at their opposite ends alternately upon the needles, the actionof the needles on one end of the cam causing the latter to move theneedle to the required position and at the same time adjusting the0pposite end of the cam in position to act upon another needle when themotion of the machine is reversed. with two operating ends we areenabled to simplify the machine, to lessen the extent of the movementrequired on the part of the cam, and to secure a more satisfactoryaction.

WVe are aware that knitting-machines have been provided with pivotedlatches for throwing the needles, one at a time, into or out of action,the latches being constructed to turn end for end, and arranged in somecases in such manner that it was necessary to employ two distinctlatches for throwing the needles out of action and two distinct latchesfor throwing them into action, and in other cases arranged in such amanner that it was necessary to employ an external lever mechanism forthe purpose of securing their action.

What we claim as ourinvention is 1. In a cylinder knitting-machine, andin combination with the needle-cylinder, needles, and ring provided withneedleoperating cams, as usual, the vertically-vibratile cam G, locatedbelow the usual path of the needle-heels and adapted to lift the needlesabove the reach of their operating-cams, the arm 9, attached to cam G,the lever 9 mounted upon the cam-ring and extended above the cylinder,the connecting-link g and the spring 9 whereby the cam may beconveniently adjusted and held during the rotation of the ring to liftthe needles out of action, and automatically restored to its normalposition when released.

2. In a cylinder knittingmachine, and in combination with the usualneedle-cylinder, needles, cam-ring, and needle-operating cams thereon,the vertically-vibratile cam G, provided with arm g, its operating-linkg and the lever g mounted on the cam-ring, with By constructing each camone end jointed to the link and the other end terminated in a cup-likeform above the cylinder, whereby the cam may beconveniently held down bythe end of the operators finger during its travelwith the cam-ring.

3. In combination with the cylinder, its needles, and the ring providedwith needleoperatin'g cams, as usual, the adjustable cam H, mounted onsaid ring above the needleheels and adapted to depress them from aninactive to an active position, the spring for lifting and sustainingsaid cam, and the arm or finger-piece 7t, connected to the cam andextending above the cylinder, as shown, whereby the operator is enabledto conveniently control the cam H during its revolution with the ring,and the cam prevented from falling improperly across the path of theneedle-heels.

4. In combination with the needles, the ring provided with theneedle-operating earn, the grooved needle-cylinder, the supplemental camII, to depress the needles from an inactive to an active position, andthe plate g movably mounted in position above the camring and cam II,substantially as described and shown, whereby said plate 9 is adapted toprevent the needles from tipping outward as their heels are depressed bythe cam H, and also adapted to move out of its operative position topermit the lifting of the needles from the machine.

5. The needle-cylinder, its needles, and the ring provided with suitableneedle-operating cams, as usual, in combination with the needle-liftingcam I, provided with the shoulders at opposite ends and centrallypivoted to admit of its ends being thrown alternately above and belowthe path of the active needle-heels, whereby the active needles arecaused to change the position of the cam, and the latter caused to liftthe needles one at a time to an inoperative position'when the cylinderreceives a reciprocating motion.

6. The needle-cylinder, needles, and the ring provided with the usualneedle-operating cams, and the cam I, pivoted to said ring and providedat its two ends with shoulders to engage the needle-heels, and thespring 1', to hold the cam in its two positions alternately.

7. In a knitting-machine, the cylinder, its needles, and the ringprovided with cams to cause the usual knitting action of the needles, incombination with the automatic rocking cam I to lift the needles out ofaction, provided with arms 4?, and the stationary adjustable cam 0,whereby the cam I may be prevented at will from lifting the needles.

8. In combination with the cylinder, its necdles, and suitableneedle-operating cams, as usual, the needle-depressing cam L, providedwith shoulders at its opposite ends and centrally pivoted to admit ofits ends being thrown alternately above and below the path of theinoperative needle-heels, whereby the inoperative needles are caused tochange the position of the cam and the latter caused to carry theneedles one at a time into action when the needle-cylinder isreciprocated.

9. In a knitting-machine, and in combination with the needles, therocking needle-depressing cams L, the vertically adjustable cams M M,and the horizontally-adjustable cams N N.

10. In combination with the intermediate shouldered rocking cam Ii, asshown, the two pivoted cams M M, their lifting-springs, and thereciprocating bar m having inclined surfaces to depress the cams M M,whereby the cam L may be rendered active or inactive at will.

11. In a knitting-machine, and in combination with the rotary ring D andthe cams M M, mounted thereon, the reciprocating bar on, for locking thecams down, and the toggle to hold said bar.

2. In combination with the rotary ring D, cams M M, their locking-bar,and the toggle to hold said bar and the stationary adj ust-able cam o torelease said parts, as described.

13. In a knitting-machine, the cylinder, its needles, and the rotaryring D, provided with cams to effect the knitting action, as usual, incombination with the automatic rocking cam to depress the needles froman inactive to an active position, the cams M M, their looking devices,the cam-arm O, to release said looking devices, the wheel to throw saidcam into operative position, and a pawl actuated by the ring I) to turnthe wheel step by step.

14. The cylinder, its needles, and the ring provided withneedle-operating cams, as usual, in combination with the rocking cam I,shouldered at its two ends to lift the needles individually out ofaction, the arms or projections '5 and t", connected to said cam, theadjustable cam o, to prevent the action of the cam I, the rocking cam L,shouldered at its two ends to lower the needles individually intoaction, the cams M M whereby the cam L may be rendered inactive, andlocking devices, substantially as shown, for controlling the position ofthe cams M M, whereby the machine may be adjusted at will to performautomatically the operation of widening or narrowing the fabric.

In testimony whereof we hereunto set our hands, this 23d day ofDecember, 1887, in the presence of two attesting witnesses.

ELIHU LIPPITT. REINIIOLD IIANSDOERFER.

Witnesses:

MARGARET DURBAN, FRANK A. DURBAN.

